root/src/blocks/browserfont.c

DEFINITIONS

1. writeSWFBrowserFontToMethod
2. finishBrowserFont
3. completeSWFBrowserFont
4. destroySWFBrowserFont
5. newSWFBrowserFont
6. SWFBrowserFont_getOutput

/*
    Ming, an SWF output library
    Copyright (C) 2002  Opaque Industries - http://www.opaque.net/

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* $Id: browserfont.c,v 1.16 2008/09/28 16:53:59 krechert Exp $ */

#ifndef __C2MAN__
#include <stdlib.h>
#include <string.h>
#endif

#include "browserfont.h"
#include "font.h"
#include "character.h"
#include "libming.h"


struct SWFBrowserFont_s
{
        struct SWFCharacter_s character;
        SWFOutput out;
        char *name;
};


static
void writeSWFBrowserFontToMethod(SWFBlock block,
                                                                                                                                 SWFByteOutputMethod method, void *data)
{
        SWFOutput out = ((SWFBrowserFont)block)->out;
        SWFOutput_writeToMethod(out, method, data);
}


static void
finishBrowserFont(SWFBrowserFont font)
{
        unsigned int i;
        SWFOutput out;
        SWF_assert(BLOCK(font)->swfVersion);

        out = newSWFOutput();
        font->out = out;        
        
        SWFOutput_writeUInt16(out, CHARACTERID(font));
        if(BLOCK(font)->swfVersion > 5) /* maybe italic or bold flag? */
                SWFOutput_writeUInt8(out, SWF_FONT_WIDECODES);
        else
                SWFOutput_writeUInt8(out, 0); 

        SWFOutput_writeUInt8(out, 0); /* reserved flags */
        SWFOutput_writeUInt8(out, strlen(font->name));

        for ( i=0; i<strlen(font->name); ++i )
                SWFOutput_writeUInt8(out, font->name[i]);

        SWFOutput_writeUInt16(out, 0); /* number of glyphs */
        SWFOutput_writeSInt16(out, 2); /* offset */

        SWFOutput_byteAlign(out);
}

static int
completeSWFBrowserFont(SWFBlock block)
{
        SWFBrowserFont font = (SWFBrowserFont)block;
        if(font->out == NULL) 
                finishBrowserFont(font);
        
        BLOCK(font)->type = SWF_DEFINEFONT2; /* see below */
        return SWFOutput_getLength(font->out);
}

/**
 * destroys a SWFBrowserFont instance.
 */
void
destroySWFBrowserFont(SWFBrowserFont font)
{
        destroySWFOutput(font->out);
        free(font->name);
        free(font);
}

/**
 * creates a browser font instance
 * This Function allows the usage of built in fonts like "_sans".
 * Takes the name of the font as an argument.
 */
SWFBrowserFont
newSWFBrowserFont(const char *name)
{
        SWFBrowserFont font = (SWFBrowserFont) malloc(sizeof(struct SWFBrowserFont_s));

        SWFCharacterInit((SWFCharacter)font);

        BLOCK(font)->writeBlock = writeSWFBrowserFontToMethod;
        BLOCK(font)->complete = completeSWFBrowserFont;
        BLOCK(font)->dtor = (destroySWFBlockMethod) destroySWFBrowserFont;

        BLOCK(font)->type = SWF_BROWSERFONT;
        CHARACTERID(font) = ++SWF_gNumCharacters;
        font->out = NULL;
        font->name = strdup(name);

        return font;
}

SWFOutput
SWFBrowserFont_getOutput(SWFBrowserFont font)
{
        if(font->out == NULL) // in case complete is called twice
                finishBrowserFont(font);

        return font->out;
}


/*
 * Local variables:
 * tab-width: 2
 * c-basic-offset: 2
 * End:
 */